?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=RANCANG+BANGUN+SISTEM+KENDALI+OTOMATIS+pH+LIMBAH+CAIR+INDUSTRI+TAHU+SEBAGAI+LARUTAN+NUTRISI+HIDROPONIK+BERBASIS+MIKROKONTROLER%0D%0A&rft.creator=BAYU+DWI+PRASETYO%2C+1214071018&rft.subject=Pertanian+(+Umum+)&rft.subject=Teknologi+(General)&rft.description=Tahu+merupakan+salah+satu+makanan+tradisional+yang+sangat+dikenal+dan+banyak+dikonsumsi+oleh+masyarakat+Indonesia.++Proses+produksi+tahu+menghasilkan+produk+yang+lainnya+berupa+limbah+cair.++Limbah+cair+tahu+yang+sudah+mengalami+penurunan+karakteristiknya+seperti+TSS%2C+BOD%2C+dan+COD+dapat+dimanfaatkan+sebagai+larutan+nutrisi+hidroponik.++pH+merupakan+salah+satu+faktor+yang+penting+dalam+sistem+hidroponik.++Pengontrolan+pH+secara+manual+dapat+menimbulkan+resiko+keterlambatan+pada+saat+pengecekan+pH.++Salah+satu+upaya+yang+dilakukan+yaitu+dengan+cara+mengendalikan+pH+secara+otomatis+menggunakan+mikrokontroler.++Tujuan+dari+penelitian+ini+untuk+merancang+sistem+kendali+pH+limbah+cair+industri+tahu+sebagai+larutan+nutrisi+hidroponik+berbasis+mikrokontroler+dan+melakukan+pengujian+alat.%0D%0APenelitian+ini+dilaksanakan+pada+bulan+September+2016+sampai+dengan+April+2017+di+Jurusan+Teknik+Pertanian+Universitas+Lampung.++Uji+kinerja+alat+dilakukan+selama+48+jam+dengan+perekaman+data+setiap+1+menit.++Analisis+uji+kinerjanya+berupa+nilai+keakurasian%2C+rerata+waktu+pengendalian%2C+stabilitas%2C+respon+sistem%2C+dan+pemberian+aksi.%0D%0AHasil+dari+penelitian+ini+terealisasinya+alat+kontrol+otomatis+pH+berdasarkan+variabel+suhu+dan+pH.++Sensor+yang+digunakan+menghasilkan+nilai+R2+sebesar+0%2C99+dengan+nilai+error+menggunakan+uji+RMSE+sebesar+0%2C16+untuk+sensor+suhu+dan+0%2C41+untuk+sensor+pH.++Dalam+pengujian+alatnya+menghasilkan+tingkat+keakuratan+sebesar+95%2C71%25%2C+rerata+waktu+pengendalian+selama+3+menit+2+detik%2C+kinerja+alat+yang+stabil%2C+respon+sistem+selama+10+menit+39+detik+untuk+menaikkan+pH+dan+22+menit+24+detik+untuk+menurunkan+pH+dari+kondisi+awal%2C+serta+jumlah+larutan+asam+(H2SO4)+yang+dikeluarkan+sebanyak+452+ml+dan+jumlah+larutan+basa+(NaOH)+yang+dikeluarkan+sebanyak+56+ml.%0D%0A%0D%0A%0D%0A%0D%0Aabstract%0D%0A%0D%0ATofu%2C+one+of+traditional+foods%2C+is+well+known+and+widely+consumed+by+the+people+of+Indonesia.++Treated+tofu+wastewater%2C+whose+characteristics+such+as+TSS%2C+BOD%2C+and+COD+had+already+decreased%2C+can+be+potentially+utilized+as+hydroponic+nutrient+solution.++Hence%2C+pH+is+an+important+factor+to+be+controlled+in+hydroponics+systems.++Manually+monitoring+and+controlling+the+pH+may+pose+a+risk+of+delayed+time.++Best+method+to+monitor+and+control+the+pH+was+done+automatically+using+a+microcontroller.++The+purpose+of+this+research+is+to+design+and+test+an+automatic+pH+controller+for+industrial+liquid+waste+used+as+nutrient+solution+in+hydroponic+system%2C+based+on+microcontroller.++This+research+was+conducted+on+September+2016+until+April+2017+at+Agricultural+Engineering+Department+of+Lampung+University.++Performance+test+of+the+tool+was+done+for+48+hours+with+data+recording+every+1+minute.++Data+analysis+of+the+performance+test+include+accuracy%2C+average+of+control+time%2C+stability%2C+system+response%2C+and+action.++The+results+of+this+research+realization+of+automatic+control+tool+pH+based+on+temperature+and+pH+variables.++Calibrations+of+the+temperature+sensor+model+and+pH+sensor+model+both+resulted+in+R2+%3D+0.99.++Validation+of+the+temperature+sensor+model+resulted+in+RMSE+%3D+0.16+and+the+pH+sensor+model+resulted+in+RMSE+%3D+0.41.++In+the+test+of+the+devices+resulted+in+an+accuracy+of+95.71%25%2C+average+controlling+time+was+3+minutes+2+seconds%2C+stable+tool+performance%2C+system+response+was+10+minutes+39+seconds+to+raise+pH+and+22+minutes+24+seconds+to+lower+pH+from+initial+conditions%2C+acid+solution+(H2SO4)+released+as+much+as+452+ml+and+amount+of+base+solution+(NaOH)+released+as+much+as+56+ml.%0D%0A%0D%0AKey+words%09%3A%09Control+system%2C+pH%2C+Tofu+wastewater%2C+Microcontroller+ATmega328&rft.publisher=UNIVERSITAS+LAMPUNG&rft.date=2017-10-10&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29513%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29513%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F29513%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++BAYU+DWI+PRASETYO%2C+1214071018++(2017)+RANCANG+BANGUN+SISTEM+KENDALI+OTOMATIS+pH+LIMBAH+CAIR+INDUSTRI+TAHU+SEBAGAI+LARUTAN+NUTRISI+HIDROPONIK+BERBASIS+MIKROKONTROLER.++UNIVERSITAS+LAMPUNG%2C+FAKULTAS+PERTANIAN+.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F29513%2F